Apparatus for cleansing milk cans and other receptacles



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I. H. KENDALL APPARATUS FOR CLEANSING MIL-K CANS AND OTHER RECEPTACLES Filed April 11, 1922 18 heets-Sheet 17 Q\ 1 O 1927' l. H. KENDALL APPARATUS FOR CLEANSING MILK CANS AND GTHER RECEPTACLES Filed April 11, 1922 18 Sheetsfiheet 18 mvsuro/r' @iW 21 Patented Oct. 4, 1927.

UNITED STATES 1 1. 4 .3 4" PATENT OFFICE.

1 nm E. KENDALL, or POTSDA'M, new YORK.

APPARATUS FOR CLEANSING MILK CANS AND OTHER RECEPTACLES. V

' Application filed April 1 1, 1922. Serial No. 551,570.

My invention relates to a new and improved machine for washing milk cans, ice cream cans, etc.

The thorough cleansing of milk cans which is necessary for the sanitary use thereof is a constant source of considerable expense to dairies. The work must be done largely by hand and a large amount of water is wasted. As many dairies are located in places where a suflicient supply of Water is diflicult to secure, this-presents a serious problem.

One of the objects of my invention is to provide a washing machine for milk cans which will operate in an automatic or in a semi-automatic manner.

Another-object of my invention is to pro vide a device for washing the inside of a can by means of a series of separatedjets of water which will thoroughly cleanse every part thereof.

Another object of my invention is to provide a device in which clean water is provided for the final rinsing of a can, and this water is then utilized for the preliminary operation or operations. 7 Another object. of my invention is to provide a device which shall be operated by a series of hydraulic rams or jacks so that the waste or outlet water from these jacks can be utilized in washing the cans.

Other objects of my invention will be set forth in the following description and drawings which illustrate several embodiments thereof. a

Fig. 1 is a front elevation of a semi-automatic machine showing cans in raised position.

Fig. 2 is a top plan view.

Fig. 3 is a section on the line 3-3 of Fig. 2. I

Fig; 4 is a section on the line 4-4 of Fig-2.

Fig. 5 is a 4 Fig. 2. Fig. Fig. 1.

Fig. 7 is a detail view illustrating one of the can holders.

Fig. 8 is a section on the line 8-8; of Fig. 2. V

Fig. 9 is asectional view through the 'lnain jack. Fig. 10 is a section on theline 1010 of 55 Fig. 9. f

section on theline 5-5 of 6 is a section on the line 6.6 of

- Fig. 21.

Fig. 11 is a diagrammatic view of the parts illustrated in the previously mentioned figures,. arranged in a straight line.

showing the cans in dot and dash lines and in lowered position. a

Fig. 12 is a sectional view'illustrating my I improved water sprayer.

Fig. 13 is a sectional view showing my improved steam nozzle.

"Fig. 14 is a sectional view illustratingan' alternative form of drying chamber or heater which is adapted to be substituted for that shown in Fig. 4.

Fig. 15 is a top plan view of an automatic machine.

Fig. 16 is a section on the line 16'16 of Fig. 15.

Fig. 17 is a view on the line 17 -17 of Fig. 15 and shows the apparatus for removing a can from the turntable. s

Fig. 18 is a side elevation of the right hand side of Fig. 17.

Fig. 19 is a view on the line 19-19 of Fig. 15 and shows the apparatus for placing a can on the turntable.

Fig. 2O shows the device of Fig. 19 in its horizontal position.

Fig. 21 is a side elevation of the left of Fig. 20.

Fig. 22 is. a section on the line 2222 of Fig. 23 is a section through the main lifting jack.

Fig. 24 shows. another embodiment of the mechanism for raising and lowering the cans and having a different control apparatus. This, form could be substituted for that shown'in Fig. 16.

. Fig. 25 is a side elevation partially in section of a different embodiment of my invention. embodying another semi-automatic type of machine.

Figs. 26 and 27 illustrate mechanism showing the means for automatically operating thevalves of the various steam and water pipes associated with the tanks, so that said valves are normally shut but are automatically opened only when the cans are in proper position.

As clearly shown in Figs. 1 and 2 a turn- 105 table 12 is mounted on a shaft 14. The turntable 12 has a series of depending rods 17 secured thereto andjcarriers 10 are secured thereto. one carrier 10 being secured to two rods 17. As clearly shown in Flg. 7, he 11 carriers 10 are surrounded by rims 11' and they each have a series of curved retaining fingers 16 along a portion of their periphery. As shown in'Fig. 1, rods 17 secured to each carrier 10 have a ring 11 slidably secured thereon and resting on collars 18'. The central tubular frame 26 has tanks or chambers secured thereto provided with holdingv projections 18 which are adapted to support the rings 11 when the central shaft 14 is depressed in the jack 28 which is shown in detail in Fig. 9 until the can C, instead of occupying the uppermost position, shown in full lines in Fig. 3. occupies its lowermost position. shown in dotted lines in Fig. 3. That is, when the turntable 12 is lowered from the position shown in Fig. 1, the projections 18. which are provided on all the tanks or chambers 26. contact with the undersides of slidable rings 11, so that said rings remain resting upon projections 18 while the turntable 12 continues its descending movement. Hence when the turntable is depressed into its lower position. the can C can be put in position on the carrier 10 and when the turntable is raised. the can passes through a. ring 11. which cooperates with the fingers 16 to'hold it in position when the turntable 12 revolves. The can is first pushed on the grid 2 on table T. This revolves the lever 3 against the force of the compression spring 4. As shown in Fig. 8. the revolution of the lever 3 opens the valve 6 so that water can pass' through the pipe 7 from any suitable source of supply and spray into the can through the nozzle 5. .The waste water falls into basin 8. and passes away through drain pipe 9. This gives the can a preliminary washing. The operator now causes the jack 28 to depress the shaft 14 and the turntable 12 until the carriers 10 are at the level of table T. c As shown in Fig. 9 the shaft 14 is secured to piston 35 which slides in a fluid tight manner within jack 28.

As shown in Fig. 9. a pipe 41 communicates with the upper end of jack 28 by means of port 43' and pipe 46 communicates with the lower end thereof by means of port 43. As shown in Fig. 10. pipe 46 communicates with the extension 461 which is connected to ports 46 and 46 of valve casing 33. The pipe 41 is counected to exten ion 42 wh ch is connected to ports 40 and 40'.. The valve 33 has thre piston-likeportions which fit tightly in the casing 33' and are separated by intermediate portions of smaller diameter.

In the position shown in Figs. 9 and 10. the valve 33 is in the position it-occupies when the turntable 12 is in the position shown in full lines in the upper part of Fig. 3. I

To start the operation of the machme, the

the port 40 open.

operator pulls handle 29 shown in Fig. 3. This causes the lever 30 to revolve counterclockwise and lifts the yoke 31, shown in Figs. 9 and 10 and which is secured to the bottom extension 32 of the valve 33.

The inlet water enters the port 34' of valve casing 33 through the pipe 34 under pressure from any suitable source and leaves it by means of pipe 34, as shown in Fig. 3 to enter tank 57 for a purposeto be later described.

IVhen' the valve 33 is thus lifted the top piston thereof clears port 40, the intermediate piston clears port 46 and the, bottom piston leaves pipe 34 open. The water thus enters above the ram piston 35 through port 43 and depresses the revoluble shaft 14. As can be seen in Fig. 3. the shaft 14 has secured thereto a disc 19 having recesses 20. A locking bar 21 is pivoted at 22 to the base 27 of the tubular standard 26, as shown in Fig. 3. and this can be revolved counterclockwise by pulling upon rod 24 against the force of compression spring 25, which spring urges the bar 21 into the position shown in Fig. 3. The bar 21 may be unlocked before the jack is actuated to bring the turntable 12 into the lower position shown in Fig. 3. When the shaft 14 has been sufliciently depressed, the disc 19 strikes collar 37 mounted upon the rod 36 of valve 33 and forces the valve 33 from what may be called the upper position to its neutral position shown in Figs. 9 and 10. The operator can then push the .can into the position shown in dotted lines in Fig. 3, under the fingers 16 of the carrier 10. When the turntable descends-the rings 11 are interc-epted by and rest upon the members 18 because they are .free to slide above the collars 18' of the rods 17.

The operator then pushes upon the rod 29 so as to revolve lever 30 clockwise and depress the yoke 31 to move the valve 33 to its lower position. In this position the top piston of the valve 33 closes port 40, the intermediate valve piston opens port 46' and closes port 46 and the bottom piston leaves The water under pressure now passes through port -16 to cxtension 461. into pipe 46. through port 43 below the piston 35 of the jack to raise the shaft 14 while the water in the jack above the piston 35 passes out throughpipe 42 and port 40 to outlet pipe 34. 1

'hen the shaft 14 has ascended sufliciently the disc 19 strikes a suitable upper projection on valve rod 36 and restores the valve 33 to its neutral position.

The position'of the can is now directly to the right of and above the pipe 5 in Fig. 2. and this may be called its initial position and is indicated by line 33. In the next position the outside of the can is to be washed by the apparatus shown more-particularly 9 

